This involves making test_tables self-contained.  Previously, it would
write to stdout, and that output had to be manually compared with
test_tables.expected.  Now the comparison is automated.

(As long as you have a stdint.h and inttypes.h available.)

And kill the unclean macros in amqp.h that were only used from
test_tables.c.

And fix up the resulting warnings

We don't use "-ansi -pedantic" in the tools dir, because that code
relies on libpopt, and so is unlikely ever to work with the Microsoft
compiler anyway.